🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.3 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.6 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.08

Radius: 1.34

Gravity: 1.16 G

Time & Orbit

Eccentricity (e): 0.044

Orbit Range: 0.57 AU - 0.63 AU

Year: 300 Days

Day: 17.2 Hours

Environment

Temp: -127 °C

Axial Tilt: 19.9 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Terrestrial

Semi-Major Axis: 0.61 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.27

Radius: 1.79

Gravity: 1.33 G

Time & Orbit

Eccentricity (e): 0.097

Orbit Range: 0.55 AU - 0.67 AU

Year: 308 Days

Day: 23.1 Hours

Environment

Temp: -120 °C

Axial Tilt: 28.3 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Gas Giant

Semi-Major Axis: 1.09 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 492.9

Radius: 12.2

Gravity: 3.31 G

Time & Orbit

Eccentricity (e): 0.128

Orbit Range: 0.95 AU - 1.23 AU

Year: 735 Days

Day: 12 Hours

Environment

Temp: -158 °C

Axial Tilt: 1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 46,815,231 km

• M1: 151,692 km (0.07 R)
• M2: 596,447 km (0.04 R)
• M3: 1,041,800 km (0.117 R)
• M4: 1,548,039 km (0.113 R)
• M5: 2,051,136 km (0.119 R)
• M6: 2,619,608 km (0.079 R)
• M7: 3,615,332 km (0.111 R)
• M8: 4,032,111 km (0.061 R)
• M9: 4,848,018 km (0.109 R)
• M10: 5,697,285 km (0.092 R)
• M11: 7,037,383 km (0.119 R)
• M12: 7,513,104 km (0.115 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.51 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 959.2

Radius: 11.1

Gravity: 7.79 G

Time & Orbit

Eccentricity (e): 0.042

Orbit Range: 1.45 AU - 1.57 AU

Year: 1198 Days

Day: 13.2 Hours

Environment

Temp: -179 °C

Axial Tilt: 43.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 46,815,231 km

• M1: 138,079 km (0.082 R)
• M2: 496,815 km (0.06 R)
• M3: 862,432 km (0.084 R)
• M4: 1,259,016 km (0.034 R)
• M5: 2,168,421 km (0.091 R)
• M6: 2,563,958 km (0.079 R)
• M7: 3,316,435 km (0.101 R)
• M8: 4,264,437 km (0.103 R)
• M9: 5,956,239 km (0.085 R)
• M10: 7,092,734 km (0.115 R)
• M11: 7,726,132 km (0.059 R)
• M12: 8,985,297 km (0.081 R)
• M13: 9,632,457 km (0.07 R)
• M14: 10,277,374 km (0.055 R)
• M15: 10,745,765 km (0.074 R)
• M16: 11,581,867 km (0.109 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.65 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 440.8

Radius: 12.2

Gravity: 2.96 G

Time & Orbit

Eccentricity (e): 0.218

Orbit Range: 1.29 AU - 2.01 AU

Year: 1368 Days

Day: 14.8 Hours

Environment

Temp: -188 °C

Axial Tilt: 34.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 46,815,231 km

• M1: 153,039 km (0.039 R)
• M2: 661,522 km (0.118 R)
• M3: 1,262,606 km (0.088 R)
• M4: 2,277,328 km (0.037 R)
• M5: 2,900,553 km (0.05 R)
• M6: 4,402,516 km (0.089 R)
• M7: 5,196,581 km (0.078 R)
• M8: 5,638,493 km (0.116 R)
• M9: 6,575,275 km (0.098 R)
• M10: 7,663,899 km (0.11 R)

Planet 6 - Gas Giant

Semi-Major Axis: 2.59 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 501.9

Radius: 9.1

Gravity: 6.06 G

Time & Orbit

Eccentricity (e): 0.121

Orbit Range: 2.28 AU - 2.9 AU

Year: 2691 Days

Day: 14.9 Hours

Environment

Temp: -203 °C

Axial Tilt: 6.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 46,815,231 km

• M1: 113,246 km (0.09 R)
• M2: 469,438 km (0.079 R)
• M3: 841,787 km (0.063 R)
• M4: 1,183,170 km (0.103 R)
• M5: 1,866,832 km (0.109 R)
• M6: 4,483,299 km (0.112 R)
• M7: 5,329,723 km (0.077 R)
• M8: 5,618,148 km (0.099 R)
• M9: 6,601,305 km (0.085 R)
• M10: 10,989,908 km (0.033 R)
• M11: 11,940,902 km (0.095 R)
• M12: 12,945,901 km (0.115 R)
• M13: 16,551,060 km (0.09 R)
• M14: 17,376,241 km (0.079 R)

Planet 7 - Gas Giant

Semi-Major Axis: 5.66 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 720.1

Radius: 11.5

Gravity: 5.44 G

Time & Orbit

Eccentricity (e): 0.078

Orbit Range: 5.22 AU - 6.1 AU

Year: 8694 Days

Day: 14.1 Hours

Environment

Temp: -210 °C

Axial Tilt: 6.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (28)

Outer Limit: 46,815,231 km

• M1: 145,858 km (0.096 R)
• M2: 674,537 km (0.112 R)
• M3: 1,104,182 km (0.104 R)
• M4: 1,606,831 km (0.091 R)
• M5: 2,156,603 km (0.101 R)
• M6: 3,082,913 km (0.106 R)
• M7: 4,284,184 km (0.082 R)
• M8: 5,129,561 km (0.04 R)
• M9: 5,510,587 km (0.052 R)
• M10: 7,034,391 km (0.12 R)
• M11: 9,278,359 km (0.115 R)
• M12: 10,237,431 km (0.119 R)
• M13: 10,947,423 km (0.062 R)
• M14: 13,572,716 km (0.091 R)
• M15: 14,617,956 km (0.105 R)
• M16: 18,368,524 km (0.117 R)
• M17: 19,113,222 km (0.109 R)
• M18: 19,569,795 km (0.065 R)
• M19: 21,632,600 km (0.088 R)
• M20: 24,100,067 km (0.113 R)
• M21: 26,560,803 km (0.06 R)
• M22: 27,609,783 km (0.115 R)
• M23: 29,486,339 km (0.026 R)
• M24: 34,491,435 km (0.077 R)
• M25: 35,854,570 km (0.085 R)
• M26: 37,489,974 km (0.057 R)
• M27: 38,930,901 km (0.035 R)
• M28: 42,694,185 km (0.07 R)

Asteroid Belt

Center: 7.18 AU

Composition

Type: Outer System (Icy)

A dense region of planetesimals and debris.

Boundary

Planet 8 - Ice Giant

Semi-Major Axis: 8.7 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 624.4

Radius: 7

Gravity: 12.74 G

Time & Orbit

Eccentricity (e): 0.131

Orbit Range: 7.56 AU - 9.84 AU

Year: 16569 Days

Day: 24.2 Hours

Environment

Temp: -237 °C

Axial Tilt: 19.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (28)

Outer Limit: 46,815,231 km

• M1: 87,066 km (0.063 R)
• M2: 400,773 km (0.115 R)
• M3: 630,705 km (0.096 R)
• M4: 1,019,509 km (0.117 R)
• M5: 2,004,462 km (0.069 R)
• M6: 2,552,289 km (0.049 R)
• M7: 2,873,476 km (0.083 R)
• M8: 3,795,747 km (0.107 R)
• M9: 4,372,297 km (0.114 R)
• M10: 5,547,987 km (0.099 R)
• M11: 6,663,538 km (0.093 R)
• M12: 6,964,379 km (0.095 R)
• M13: 8,259,448 km (0.084 R)
• M14: 8,963,904 km (0.094 R)
• M15: 10,094,715 km (0.075 R)
• M16: 13,097,892 km (0.105 R)
• M17: 14,194,893 km (0.072 R)
• M18: 16,570,507 km (0.112 R)
• M19: 17,364,124 km (0.111 R)
• M20: 21,903,971 km (0.047 R)
• M21: 32,741,289 km (0.076 R)
• M22: 33,862,974 km (0.117 R)
• M23: 35,009,941 km (0.108 R)
• M24: 35,527,998 km (0.097 R)
• M25: 36,579,372 km (0.114 R)
• M26: 49,546,665 km (0.109 R)
• M27: 54,065,718 km (0.077 R)
• M28: 56,691,310 km (0.102 R)

Planet 9 - Ice Giant

Semi-Major Axis: 8.86 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 220.1

Radius: 3.1

Gravity: 22.9 G

Time & Orbit

Eccentricity (e): 0.006

Orbit Range: 8.81 AU - 8.91 AU

Year: 17028 Days

Day: 22.5 Hours

Environment

Temp: -218 °C

Axial Tilt: 18.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 46,815,231 km

• M1: 39,195 km (0.037 R)
• M2: 441,613 km (0.084 R)
• M3: 564,283 km (0.027 R)
• M4: 677,080 km (0.049 R)
• M5: 823,387 km (0.116 R)
• M6: 3,192,269 km (0.113 R)
• M7: 6,577,818 km (0.042 R)
• M8: 11,568,553 km (0.072 R)
• M9: 14,233,639 km (0.086 R)
• M10: 14,942,135 km (0.095 R)
• M11: 15,606,349 km (0.043 R)
• M12: 17,570,719 km (0.056 R)
• M13: 17,790,478 km (0.096 R)
• M14: 20,169,832 km (0.089 R)
• M15: 20,653,482 km (0.116 R)
• M16: 21,062,632 km (0.109 R)
• M17: 22,666,172 km (0.119 R)
• M18: 26,784,900 km (0.084 R)
• M19: 33,014,604 km (0.095 R)
• M20: 42,862,483 km (0.074 R)

Kuiper Belt

Range: 30 - 56 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 288 - 10,637 AU

Composition

Type: Cometary Reservoir

System's final boundary, containing trillions of icy planetesimals.

Gravitational Limit